Drain cock



Nov. 16, 19,48. G; H. HUFFER ET AL 2,453,792

DRAIN COCK Filed May 15, 1944 g, lll

/47'7'0/VEY5 Patented Nov. 16, 1948 foFFI-CE C'.VV Beerli, MayeldHeights; Qhiqqtsslgi'ioxscto. The Weatherhead Company, Cleveland;-Ghia,acorporation oOhio r i Y Application May i5, 1944, srii No. 535,610

This invention-relatesgenerally to tube ,closures and particularly-to anew and improved drain cock.

In the drawings accompanying and forming a `part of this specification:

Fig. 1 is aA central sectional View taken through a drain pipe equippedwith one form of closure embodying the present invention;

Fig; 2 is a sectional view taken on line 2-2 of Fig. 1';

Fig'. Sis a' sectional view taken on line 3-3 of Fig. 2 but with thepipe omitted;

Fig. 4 is a cross sectional view taken on line 4-11 of Fig. 3;

Fig. 5 is a View similar to Fig. 1 but with the drain pipe shown inelevation and with the closure adjusted to permit drainage of fluidtherethrough;

Fig. 6 is a View quite similar to Fig. 1 but showing a modified form ofclosure; and

Fig. 'l is an end view taken on line 1-1 of the closure shown in Fig. 6.

Fig. 1 indicates a portion of a tank I having an exteriorly threadeddrain plug 2 secured in opening 3 thereof. Plug 2 has an unthreadedportion d for engagement with a wrench, and is exteriorly screw threadednear its outlet end, as indicated at 5. The closure for plug 2 comprisesa Cup having an imperforate end wall 6 and side wall 'I provided with anopening 8 therethrough. Wall 'I is generally cylindrical but is formedwith axially extending U-shaped exterior projections 9. In themodications shown in Figs. 1 to 5 inclusive, these U-shaped projections9 are open, as indicated at I0, and members II are held in place in theprojections by pressure of the sides of the projections thereagainst.Preferably these members Il are composed of material which is softenough to be cut readily by threads 5 of the plug when it engage-s withthreads I2 (see Fig. 4) formed on the inner cylindrical surface ofportions l of the closure. Packing I3 on end wall 6 engages with theopen end of spud 2 when the closure is screwed onto the latter and sealsthe spud against `flow of liquid therethrough. When the closure isscrewed partly off spud 2, as is better shown in Fig. 5, and opening 8is in communication with the interior of spud 2, fluid may ow throughthe spud and out of the closure.

In Figs. 6 and '7 the spud 2 is like that shown in Figs. 1, 2 and 5. Theclosure generally resembles the closure of Figs. 1 to 5 but differstherefrom in certain particulars. The end Wall 20 is indented inwardly,as at 2l, to form an inner curved surface which is engageable with fluidsealing contact with the end of the inner surface "of s'pu'd 2,asindicated at'23. If desired, the inner endedgeto Spud 2 may bechamfered slightly to 'aiford" a"` wider annular surfaceA to vseat onthe vinner"-surface'ofportieri 2|'. The end wall 2D is provided with,aplrality' of openings 24 in lieu fof 'anfopening through4 the side'wall, as in the `"'n'lcdificat'ionf of Figs; *1" to 5, and through theseopenings 24:- niay ow from' spud "2 through `the closure. '3fThefsidewalli of the closure is -iriteriorly' threaded; `as indicated at26,` and there of Figs. 1 to 5, however, the part-s of each extension 21abut against each other and are not separated by friction members, suchas I I Aof those figures.

It will be understood that the closure of Figs. 1 to 5 may beconstructed with the U-shaped projections of Figs. 6 and 7 if desired,that is, without including members I I within those projections and alsothat the closure of Figs. 6 and 7 may be provided with a fluid passagethrough the side wall thereof after the fashion shown in Figs. 1 to 5instead of having passages formed in the end Wall 20.

The closure of this invention may be made from steel or other metalwhich can be deeply drawn into the forms shown in the drawing-s anddescribed hereinabove, or equivalent forms. The axially extendingprojections afford grips by means of which the closure may be readilyscrewed on the spud to make uid sealing contact with the spud within theclosure or to break that seal and permit iiuid to flow freely from thespud through the closure. The members I I are preferably composed ofsoft metal, or of a non-metallic composition, which may have threads cutinto it by the threads on spud 2 and which will, therefore, fit thosethreads as closely as, or closer than, the threads I2 on the innersurface of the cup. These members tend to prevent relative movement ofthe spud and closure by reason of their frictional engagement with thespud.

Having thus described our invention so that others skilled in the artmay be able to understand and practice the same, We state that what Wedesire to secure by Letters Patent is dened in what is claimed.

What is claimed is:

1. A closure for a threaded tube end comprising a drawn sheet metalmember having a bottom wall, a pair of arcuate walls integral With andprojecting from the bottom wall, the interior surfaces of said arcuatewalls facing each other and defining a substantially cylindricalsurface, and

connectors U-shaped in cross section integral with the bottom wall andthe adjacent side edges of said arcuate walls and projectingsubstantially radially therefrom, said connectors having the innersurfaces of their leg portions pressed substantially into contact witheach other whereby the adjacent side edges of said arcuate Walls aredisposed in close proximity to each other, the interior surfaces of saidarcuate walls having threads cut therein for engagement with thethreaded end of said tube, said bottom wall having its central portionindented to engage and close the end of said tube when said member isscrewed home, said bottom wall being formed with openings therethroughspaced radially from the indented portion and adapted to be brought intocommunication with said tube when said member is partially unscrewed.

2. A closure for a threaded tube end comprising a drawn sheet metalmember having a bottom wall, a pair of arcuate walls integral with andprojecting from the bottom wall, the interior surfaces of said arcuatewalls facing each other and deining a substantially cylindrical surface,and connectors U-shaped in cross-section integral with the bottom walland the adjacent side edges of said arcuate walls and projectingsubstantially radially therefrom, said connectors having the innersurfaces of their leg portions disposed relative to eachother so thatthe adjacent side edges of said arcuate walls are disposed in closeproximity to each other, the interior surfaces of said arcuate wallshaving threads cut therein for' engagement with the threaded end of saidtube, said bottom wall having its central portion indented to engage andclose the end of said tube When said member is screwed home, said bottomwall being formed with openings therethrough spaced radially from theindented portions and adapted to be brought into communication with saidtube when said member is partially unscrewed.

GEORGE I-I. HUFFERD.

NORBERT C. BEERLI.

le of this patent:

UNITED STATES PATENTS Number Name Date 555,300 Browne Feb. 25, 1896809,789 Duncan Jan. 9, 1906 1,040,266 Bowen Oct. 8, 1912 1,274,867 FordAug. 6, 1918 1,525,517 Smith Feb. 10, 1925 2,167,321 Abercrombie July25, 1939 FOREIGN PATENTS Number Country Date 348,031 Germany 1922693,344 France 1930 490,680 Great Britain 1938

